Pumpkin saw



FIG. 1 is a front elevation view of pumpkin saw showing my new design;

FIG. 2 is a right side elevation view thereof;

FIG. 3 is a left side elevation view thereof;

FIG. 4 is a bottom plan view; and,

FIG. 5 is a top plan view.

The ornamental design for a pumpkin saw, as shown.